This is My 1991 Grand Prix STE
In 1991, there were 792 produced with the 3.4 DOHC w/automatic. It has every option available except the power moonroof.
Engine Mods:
The engine is equiped with Brand New GM performance parts high compression heads with larger valves, stiffer springs, and completely port and polished, with larger oval shaped ports similar to the 96'-97' design. The whole engine was blue printed with all casting flash removed from the block, heads, cam carriers and all related engine parts and components. The Upper Intake & Lower Intake have been extruded, port & polished and port matched to both each other and to the heads. The throttle body has been bored out from 60mm to 72mm and then bell shaped and polished. I had brand new gm exhaust manifolds for the heads that I port matched, port and polished as well as ceramic coated. (the cross over pipe as well) The timing to the cams also was modified to a much more agressive profile. All the regular engine parts and components were replaced with Brand New Genuine GM parts.
The engine is equiped with:
Custom underdrive pulley
Custom cold air intake
MSD Ignition coils, and DIS-4 Ignition Box
Custom tuned chip
Custom HIGH flow, balanced, CNC machined injectors
Battery Relocated to trunk with 2ga wire
High flow fuel pump with larger ga. drive wires
Heated O2 sensor
DEI cool insulated fuel rail
DEI insulated UIM & LIM
High flow exhaust
Custom CNC aluminum engine mounts with urathene bushings
Custom CNC oil catch can
Extensive Ceramic Coating, Triple Chrome Plating
EARL'S and SPECTRE Stainless Steel braided hoses
Chrome hose clamp covers and AN- fittings
ROYAL PURPLE 5W-30 Synthetic oil
TRANNY MODS:
Custom Built 2750 stall torque with HD over sized clutches
B&M Racing 24,000 BTU Tranny cooler
B&M Racing remote over-sized tranny filter system
COOL TECH Tranny thermostatic control valve
ROYAL PURPLE Xtreme Racing ATF Synthetic
Here are some more engine pics...
